Completely Frustrated!

[mwing]

It's been a while since i've used my pro tools setup, maybe a year or so. I'm so frustrated with this piece of junk because there is always some update or compatibility issue and nothing works. Anyway, i'm looking for some advice to get something stable running. Setup is this:
-2012 Macbook Pro 15", 1TB SSD, 8GB RAM, 2.6GHz i7, OSX 10.13.3
-Pro Tools 12.5.1
-Digi002 Rack
-Presonus Digimax LT

Yes, i know the HW is old. I bought it some time ago and have had some good use out of it. Used to be setup with an older PowerMac G5. Anyway, i'm looking for advice on the best route to go with all this equipment i have. I would rather not invest a ton more money into this as it's only used as a hobby at this point. Should I get another SSD and load another OS on it and use it solely for Pro Tools? I've been out of the pro-tools loop for some time and looking for any advice on what to do? Thanks!

-Mitch